JPS5683716A - Method of measuring eccentricity and assembling lens system - Google Patents
Method of measuring eccentricity and assembling lens systemInfo
- Publication number
- JPS5683716A JPS5683716A JP16117479A JP16117479A JPS5683716A JP S5683716 A JPS5683716 A JP S5683716A JP 16117479 A JP16117479 A JP 16117479A JP 16117479 A JP16117479 A JP 16117479A JP S5683716 A JPS5683716 A JP S5683716A
- Authority
- JP
- Japan
- Prior art keywords
- lens
- chart
- examined
- screen
- mirror
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Abstract
PURPOSE: To easily measure the eccentric rates of a lens to be examined without requiring any intricate calculation by disposing a light source, a chart, an observation system etc. to the front of the lens to be examined, and disposing a reflection mirror having a spherical surface behind said lens.
CONSTITUTION: A half mirror 4 provided in front of a lens 5 to be examined constitutes an observation system together with a screen 7 and the operator places his pupil on the screen 7 and observes the lens. A reflection mirror 6 disposed behind the lesn 5 is constituted of a kind of concave mirror, and has a reflection curved surface 6a and a plane part 6b. If the optical axes of all the lenses constituting the lens 5 are correctly aligned to the transmitted light axis 0-0, the center of the chart light image is in alignment to the center C of curvature. The operator focuses the chart image on the screen 7 by moving the chart 2 or an imaging lens 3 forward or backward and after this, he observes the deviation of the imaging point F by turning the lens 5 around the optical axis, thereby judging the presence or not of eccentricity of the lens.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16117479A JPS5683716A (en) | 1979-12-12 | 1979-12-12 | Method of measuring eccentricity and assembling lens system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16117479A JPS5683716A (en) | 1979-12-12 | 1979-12-12 | Method of measuring eccentricity and assembling lens system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5683716A true JPS5683716A (en) | 1981-07-08 |
Family
ID=15729984
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16117479A Pending JPS5683716A (en) | 1979-12-12 | 1979-12-12 | Method of measuring eccentricity and assembling lens system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5683716A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0593888A (en) * | 1991-03-27 | 1993-04-16 | Rockwell Internatl Corp | Method and device for determining optical axis of off-set mirror |
-
1979
- 1979-12-12 JP JP16117479A patent/JPS5683716A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0593888A (en) * | 1991-03-27 | 1993-04-16 | Rockwell Internatl Corp | Method and device for determining optical axis of off-set mirror |
JPH0827444B2 (en) * | 1991-03-27 | 1996-03-21 | ロックウェル・インターナショナル・コーポレイション | Method and apparatus for determining the optical axis of an off-set mirror |
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